Your vid of the tiger barbs is two males fighting for dominance. I had a school of 22 at one point and every time I did a water change or rearranged the tank someone would challenge the alpha. Next day they'd be chasing the females like crazy spawning sometimes for two days straight. I actually raised about 10 of the fry that hatched inside my canister filters.
Large water changes always bring out stress coloration in most of my cichlids. After a day or so they usually settle back down.
Large water changes always bring out stress coloration in most of my cichlids. After a day or so they usually settle back down.